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Traffic simulation modeling has been applied to many transport planning and traffic engineering situations. The further development of traffic simulation modeling to study the impact of safety measures in a systematic, rigorous, and transparent fashion is becoming increasingly viable as the models improve and the understanding of driver behavior is improving. This paper presents an application of traffic simulation to the study the safety problem of heavy vehicle red-light running at a vehicle actuated highway intersection in a metropolitan area in Australia. The processes of data collection, model calibration and validation, and evaluation are described. Modeling driver stop-or-go behavior of drivers of heavy and light vehicle in the “dilemma zone” of the vehicle actuated signal is also illustrated, along with the modeling of surrogate safety measures. Five alternative signal treatments intended to reduce heavy vehicle …